Seminar Numerische Mathematik
WIAS Berlin

G. Pitton (SISSA, Italien)

Accelerating augmented and deflated Krylov space methods for convection-diffusion problems

Programm / Abstract:
In this talk I will recall some basic notions of augmented and deflated Krylov space methods for the iterative solution of linear systems. Then I will discuss a few strategies to apply these techniques to the solution of linear systems coming from nonlinear convection-diffusion equations . In particular, I will argue that in some cases it may be convenient to exploit some alternative recycling strategies based on the SVD selection of previous solutions. Some numerical tests in scalar nonlinear convection-diffusion problems discretized with Finite Elements and Spectral Elements will be discussed.

Zeit:
am Dienstag den 28. März 2017 um 13:30

Ort:
Weierstraß-Institut
Mohrenstr. 39
10117 Berlin
Erhard-Schmidt-Hörsaal Erdgeschoss

eingetragen von lawrenz(marion.lawrenz@wias-berlin.de, 030 20372566)

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